Device simulation of lead-free CH_3NH_3SnI_3 perovskite solar cells with high efficiency

作     者：杜会静 王韦超 朱键卓 

作者机构：College of Science Yanshan University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2016年第25卷第10期

页      面：554-561页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the Graduate Student Education Teaching Reform Project,China(Grant No.JG201512) the Young Teachers Research Project of Yanshan University,China(Grant No.13LGB028) 

主　　题：CH_3NH_3SnI_3 perovskite solar cells device simulation high efficiency 

摘      要：The lead-free perovskite solar cells(PSCs) have drawn a great deal of research interest due to the Pb toxicity of the lead halide *** a viable alternative to CHNHPbX,because it has a narrower band gap of 1.3 eV and a wider visible absorption spectrum than the lead halide *** progress of fabricating tin iodide PSCs with good stability has stimulated the studies of these CHNHSnIbased cells *** the paper,we study the influences of various parameters on the solar cell performance through theoretical analysis and device *** is found in the simulation that the solar cell performance can be improved to some extent by adjusting the doping concentration of the perovskite absorption layer and the electron affinity of the buffer and HTM,while the reduction of the defect density of the perovskite absorption layer significantly improves the cell *** further optimizing the parameters of the doping concentration(1.3 × 10cm~3) and the defect density(1 × 10cm~3) of perovskite absorption layer,and the electron affinity of buffer(4.0 eV) and HTM(2.6 eV),we finally obtain some encouraging results of the Jof 31.59 mA/cm~2,Vof 0.92 V,FF of 79.99%,and PCE of 23.36%.The results show that the lead-free CHNHSnIPSC is a potential environmentally friendly solar cell with high *** the Snstability and reducing the defect density of CHNHSnIare key issues for the future research,which can be solved by improving the fabrication and encapsulation process of the cell.